/*= form_tag '/search', class: 'navbar-search' do*/
  /*= text_field_tag 'q', @q, class: 'input-medium search-query', placeholder: @q || 'Search'*/

form.navbar-search action="/books" method="get"
  input.search-query.span3 name="q" placeholder=t("layout.search") type="text" value=(params[:q])
